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Water/Chemical Squeezing Sponge Roller

Water/Chemical Squeezing Sponge Roller

TECHNOPOROUS ROLLER

Application:

Squeegee rollers Printed circuit board, Lead frame, Mini-lab, Touch Panel, Semi-conductor, CoF Tape, IC Card/chip and etc.
Washing pads Hard disc, Glass plate, Medals, Coins etc.
Coating rollers Ink rollers and miscellaneous coating
Chemical squeeze rollers Plating, Etching, etc.

Features:

Polyurethane - Excellent water absorption
- Excellent abrasion resistance
- Excellent heat resistance
- Will not become hardened even when dried
Polyolefin - Excellent chemical resistance
- Long life comparing with PVA sponge rollers
- Will not become hardened even when dried
- Suitable for Soft etching, Plating and Aqueous Flux coating processes.

General properties:

Material U-16W U-26W L-26W
Polyurethane Polyurethane Polyolefin
Apparent specific gravity g/cm3 0.24 0.26 0.33
Tensile strength kg/cm2 6.0 12.6 5.5
Elongation % 330 300 330
Hardness ASKER C 10 18 18
Pore size m 60 60 60
Heat resistance (Decay in water) ﾟC 100 100 60
Water absorption speed sec Instant Instant Instant

The above table is just for example. The properties are adjustable on demand.

Chemical resistance of polyurethane roller:

Retention % of tensile strength after 3 weeks immersion 25ﾟC TECHNOPOROUS U-26W Competitor's polyurethane roller
Hydrochloric acid 10% 100 99
Sulfuric acid 10% 100 99
Sodium hydrate 10% 63 Decay in 4 days

Chemical resistance of polyolefin roller:

Chemicals Tensile strength (Retention %) Elongation (Retention %)
1 week later 2 week later 3 week later 4 week later 1 week later 2 week later 3 week later 4 week later
10% Sulfuric acid 102 100 100 101 100 102 99 101
47% Sulfuric acid 101 96 100 107 95 105 95 93
60% Nitric acid 102 93 91 87 96 88 86 84
10% Hydrochloric acid 100 100 99 101 101 99 103 102
36% Hydrochloric acid 98 103 98 99 98 100 99 102
30% Acetic acid 97 97 101 106 88 86 91 95
85% Phosphoric acid 100 95 103 105 103 91 100 106
10% Sodium hydrate 103 99 102 100 98 101 100 102
30% Sodium hydrate 98 101 99 100 100 102 101 98
10% Ammonia 102 92 97 106 100 104 103 96
10% Iron(III) chloride 103 100 101 102 101 99 103 101
40% Iron(III) chloride 106 100 99 102 98 93 97 96
30% Hydrogen peroxide 98 96 98 106 94 102 100 103
Available chlorine 5% sodium 100 97 102 103 98 104 101 98
hypochlorite
5% Potassium permanganate 101 106 99 94 102 98 88 68
Methanol 99 99 100 101 102 98 100 100
Ethanol 99 98 99 103 105 94 100 102
  1. Retention %=Measured value/Original value×100
  2. The above measured values are not guaranteed.
Test method of chemical resistance:
  1. Sample size: 60mm(L)×10mm(W)×2.5mm(T)
  2. Immersion conditions:
    1. In PP container, the sample was submerged under the chemical solution volumetrically 20 times or more the sample for each period.
    2. Temperature: 25±2
    3. After the submersion, the sample was washed with a large quantity of running water to eliminate remaining chemicals and dried.
  3. Tensile strength measurement:
    1. The two indication lines were put 20mm apart from each other on the lengthward center of the sample, and the measurement was conducted by Tensile Strength Meter of Minebea Co., Ltd.
    2. Tensile speed: 300mm/min.

Advantages against other type of sponge rollers:

Material Technoporous Poly urethane Technoporous Polyolefin PVA PVC PE, PP
Average pore size (μm) 60 60 130 60 30, 50, 70 etc
Apparent specific gravity (g/cm3) 0.24 0.36 0.1 0.3 0.6
Hardness (ASKER C) 10, 20, 40, 60 20, 30 Hard when dried 10 Hard
Water absorption speed Instant Instant Slow when dried Slow Slow
Heat resistance(ﾟC) 100 70 60 80 70
Advantage / Disadvantage - Excellent abrasion resistance - Excellent resistance to acid and alkali - Elastic only when wet.
- Must be stored in preservation tank because it easily becomes corrupted.		 - Degradation and elution of Plasticizer hardens the sponge. - No elasticity.

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Katsura Roller Mfg. Co., Ltd.

5-3-13 Nakagawa Ikuno-ku
Osaka 544-0005 Japan
TEL +81-6-6751-1121
FAX +81-6-6754-4400